<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>p1_CSS的三种位置</title>
        <style>
            p{
                color:blue;
            }
            div{
                color:green;
            }
            h2{
                color:green !important;
            }
        </style>
        <link rel="stylesheet" href="01.css">
    </head>
    <body>
        <h4 style="color: red;background-color:yellow ;">我是标题1</h4>
        <h4>我是标题2</h4>
        <h4>我是标题3</h4>

        <p>我是段落</p>
        <p>我是段落</p>
        <p>我是段落</p>
        <p>我是段落</p>

        <div>我是div</div>
        <div>我是div</div>
        <div>我是div</div>

        <h2 style="color: red">优先级</h2>
    </body>
</html>